As bowtechmadman says above, it's worth checking into the company more from independent sources. There are a couple of OWB companies that have changed names after screwing over customers by taking deposits and canceling "lifetime" warranties. (It's not just OWB companies unfortunately - seems to me it shouldn't be so easy to close the doors and reopen as a "new" business doing exactly the same product and getting rid of old commitments. But that's an issue for another thread...) They may be good and just getting started as a new company, but buyer beware.
Personally I prefer the pump to be mounted indoors and I may consider a better insulated PEX if that is not high end stuff they offer. Seems cheap at $5/ft but it may be OK.